/*******************************************************************************
* Copyright (c) 2009 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Zend Technologies
*******************************************************************************/
package org.eclipse.php.internal.core.codeassist.contexts;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.eclipse.dltk.core.CompletionRequestor;
import org.eclipse.dltk.core.ISourceModule;
import org.eclipse.php.internal.core.util.text.TextSequence;
/**
* This context represents state when staying in a catch statement. <br/>
* Examples:
*
* <pre>
* 1. catch (|) { }
* 2. catch (Exception $|) { }
* 3. catch (Ex|) { }
* </pre>
*
* @author michael
*/
public abstract class CatchContext extends StatementContext {
protected static final Pattern CATCH_PATTERN = Pattern.compile(
"catch\\s[^{]*", Pattern.CASE_INSENSITIVE); //$NON-NLS-1$
private int catchStart;
public boolean isValid(ISourceModule sourceModule, int offset,
CompletionRequestor requestor) {
if (!super.isValid(sourceModule, offset, requestor)) {
return false;
}
TextSequence statementText = getStatementText();
Matcher matcher = CATCH_PATTERN.matcher(statementText);
catchStart = statementText.length();
while (matcher.find()) {
if (statementText.length() == matcher.end()) {
catchStart = matcher.start() + 1; // for the white space before
// the 'class'
break;
}
}
if (catchStart == statementText.length()) {
return false;
}
return true;
}
/**
* Returns starting offset of the catch keyword relative to the current
* statement.
*
* @see #getStatementText()
* @return
*/
public int getCatchStart() {
return catchStart;
}
}